A Reconfigurable DCS1800/W-CDMA LNA: Design and Implementation Issues

Christian Moreira (1) , Eric Kerherve (1) , Pierre Jarry (1) , Didier Belot (2)

1 IMS - Laboratoire de l'intégration, du matériau au système
2 ST-CROLLES - STMicroelectronics [Crolles]

We present in this article a dual-standard dual-mode low-noise amplifier (LNA) for DCS1800/W-CDMA-FDD applications. In order to save die area compared to conventional parallel LNAs, we have employed an alternative circuit configuration. It consists of sharing the most die consuming elements (inductances) in both operation standards, enabling a more compact solution. The standard selection is performed through a bias scheme (MOS switches) that allows alternating between the two involved standards. The LNA die area is 1.0 x 1.2 mm² and it consumes 6.8mW (3.8mA under 1.8V), including bias circuitry

Mots clés: Low-noise amplifier; noise optimization; multi-standard; multi-mode; wireless application

Domaines: Micro et nanotechnologies/Microélectronique

Christian Moreira, Eric Kerherve, Pierre Jarry, Didier Belot. A Reconfigurable DCS1800/W-CDMA LNA: Design and Implementation Issues. International Journal of RF & Microwave Computer Aided Engineering (RFMiCAE), 2008, 10pp. ⟨hal-00214188⟩